671081246320 has 40 divisors (see below), whose sum is σ = 1560297969360. Its totient is φ = 268426636800.

The previous prime is 671081246317. The next prime is 671081246323. The reversal of 671081246320 is 23642180176.

It is an interprime number because it is at equal distance from previous prime (671081246317) and next prime (671081246323).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671081246323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7244295 + ... + 7336345.

It is an arithmetic number, because the mean of its divisors is an integer number (39007449234).

Almost surely, 2^671081246320 is an apocalyptic number.

It is an amenable number.

671081246320 is an abundant number, since it is smaller than the sum of its proper divisors (889216723040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671081246320 is a wasteful number, since it uses less digits than its factorization.

671081246320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183193 (or 183187 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 671081246320 in words is "six hundred seventy-one billion, eighty-one million, two hundred forty-six thousand, three hundred twenty".